Mixing chemicals in a cold pack creates a reaction that: absorbs heat
destroys heat
releases cold
none of the above

the dependant variable is spilled water

the independent is the heat

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72